how to implement concatenation of two values (String and integer) in recorded simulation of scala???

Gatling (Open-Source)
1

.exec(http(“request_44”)

.post("/abcd/test")

.headers(headers_10)

.formParam(“testdata”, “123456$$AbcDEf,1#789011$$gHiJKL,1#121314$$MnOPQ7,1#… and so on”)) // Here is two values in testdata parameter, 1st is string and 2nd is integer and passing here with # sepration.

While execution, I am getting both values separately (in response) in other request. I want to do concatenation of these values with # separation.

So can anyone tell me, how concatenate method would be implement in between the Scenario.

Your help would be much appreciated.

thanks!

Praveen Mourya